mysql rpm包升级

升级步骤：

1、停止MySQL服务

service mysqld stop

2、备份配置文件

mv /etc/my.cnf /etc/my.cnf.bak

3、卸载现有旧版本MySQL

rpm -qa | grep -i mysql | xargs rpm -ev --nodeps

4、安装新版本

rpm -ivh mysql-community-common-5.7.36-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.36-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.36-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-5.7.36-1.el7.x86_64.rpm

5、恢复配置文件

rm -rf /etc/my.cnf
cp /etc/my.cnf.bak /etc/my.cnf
chmod 644 /etc/my.cnf//需要注意权限问题

6、启动MySQL服务

service mysqld start